Worksheets2022 Benchmark Science 8
Total questions: 77
Worksheet time: 4hrs 51mins
A change in position with respect to a reference point is...
acceleration
velocity
direction
motion
You do not know an object's velocity until you know its...
speed and distance
reference point
speed and direction
acceleration
If you know a car travels 30 km in 20 minutes, you can find its...
acceleration
average speed
direction
instantaneous speed
Acceleration is a change in speed or...
time
direction
slope
distance
The rate at which velocity changes is called...
acceleration
constant speed
average speed
velocity
TRUE OR FALSE: The distance an object travels per unit of time is called acceleration.
TRUE
FALSE
TRUE OR FALSE: The basic SI unit of length is the meter.
TRUE
FALSE
TRUE OR FALSE: The SI unit for velocity and speed is m/s.
TRUE
FALSE
TRUE OR FALSE: Both speed and acceleration include the direction of an object's motion.
TRUE
FALSE
Your father is driving to the beach. He drives at one speed for two hours. He drives at a different speed for another two hours and a third speed for the final hour. How would you find his average speed for all five hours?
Divide the total driving time by the total distance
Multiply the total driving time by the total distance
Divide the total distance by the total driving time
Multiply the total distance by the total driving time
Two objects traveling at the same speed have different velocities if they...
start at different times
travel different distances
have different masses
move in different directions
An object used as a reference point to determine motion should be...
accelerating
stationary
decelerating
changing direction
WHAT TYPE OF FRICTION?: Friction between an unmoving book and the desk on which it is sitting.
Static
Sliding
Rolling
Fluid
WHAT TYPE OF FRICTION?: Rubber pads on a bicycle's brakes rubbing against the tire.
Static
Sliding
Rolling
Fluid
WHAT TYPE OF FRICTION?: Ball bearings in skateboard wheels.
Static
Sliding
Rolling
Fluid
WHAT TYPE OF FRICTION?: The air resistance a parachuter experiences.
Static
Sliding
Rolling
Fluid
When an unbalanced force acts on an object, the force...
changes the motion of the object
is canceled by another force
does not change the motion of the object
is equal to the weight of the object
Air resistance is a type of...
rolling friction
sliding friction
static friction
fluid friction
Which of the following is not a projectile?
a satellite
a thrown ball
a ball on the ground
a soaring arrow
The resistance of an object to any change in its motion is called...
inertia
friction
gravity
weight
The product of an object's mass and velocity is called the object's...
net force
weight
momentum
gravitation
TRUE OR FALSE: Balanced forces are equal forces acting on an object in opposite directions.
TRUE
FALSE
TRUE OR FALSE: Rolling friction occurs when two solid surfaces slide over each other.
TRUE
FALSE
TRUE OR FALSE: The greatest velocity a falling object reaches is called its momentum.
TRUE
FALSE
TRUE OR FALSE: The law of universal gravitation states that the total momentum of objects that interact does not change.
TRUE
FALSE
What force makes it less likely for a person to slip on a dry sidewalk as opposed to an icy sidewalk?
air resistance
friction
inertia
momentum
Which of the following is determined by the force of gravity?
weight
momentum
mass
distance
A 50-car freight train and an 8-car passenger train are stopped on parallel tracks. It is more difficult to move the freight train than the passenger train. What accounts for this fact?
terminal velocity
inertia
centripetal force
speed
If you divide the force exerted on a surface by the total area of the surface, you will know...
density
lift
pressure
buoyant force
If you know the weight of an object that floats, you know the...
object's density
object's mass
object's volume
buoyant force
If you divide the mass of an object by its volume, you know the object's...
mass
density
weight
pressure
The concept that an increase in pressure on a confined fluid is transmitted equally to all parts of the confined fluid is known as...
Pascal's principle
Bernoulli's principle
Archimedes' principle
Newton's third law
The concept that the pressure in a fluid decreases as the speed of the fluid increases is known as...
Pascal's principle
Bernoulli's principle
Archimedes' principle
Newton's first law
TRUE OR FALSE: Pressure is force per unit of mass.
TRUE
FALSE
TRUE OR FALSE: A fluid is a material that can easily flow.
TRUE
FALSE
TRUE OR FALSE: A factor that explains flight is Archimedes' principle.
TRUE
FALSE
TRUE OR FALSE: Lift is an upward force created by differences in fluid pressure.
TRUE
FALSE
The upward force that acts on an airplane's wing is called...
drag
lift
inertia
pressure
Which of the following is an example of a hydraulic system?
a car's brakes
a barometer
an airplane's wing
a submarine's flotation tanks
A boat that weighs 28,800 N is loaded with 7,200 N of cargo. After it is loaded, what is the buoyant force acting on the boat?
400 N
22,000 N
36,000 N
360,000 N
Why doesn't air pressure crush human beings at sea level?
Air pressure at sea level is very low.
Clothing on our bodies shields us from air pressure.
Air is not as heavy as human beings.
Pressure from the fluids inside our bodies balances the air pressure outside.
You observe that a chunk of tar sinks in puddles of rainwater but floats on the ocean. An experiment to explain the behavior or the tar should measure...
the difference between atmospheric pressure and water pressure
the densities of fresh water, salt water, and tar
the height from which the chunk of tar is dropped
the depth of each type of water
Any material that can easily flow is considered a...
liquid
fluid
gas
metal
TRUE OR FALSE: The distance an object travels per unit of time is called speed.
TRUE
FALSE
TRUE OR FALSE: Both velocity and acceleration include the direction of an object's motion.
TRUE
FALSE
TRUE OR FALSE: Sliding friction occurs when two solid surfaces slide over each other.
TRUE
FALSE
TRUE OR FALSE: The greatest velocity a falling object reaches is called its terminal velocity.
TRUE
FALSE
TRUE OR FALSE: The law of conservation of momentum states that the total momentum of objects that interact does not change.
TRUE
FALSE
TRUE OR FALSE: Pressure is force per unit of area.
TRUE
FALSE
TRUE OR FALSE: A factor that explains flight is Bernoulli's principle.
TRUE
FALSE
KEY TERM: The rate at which velocity changes over time; a change in speed, direction or both.
acceleration
speed
motion
velocity
KEY TERM: The distance traveled divided by the time interval during which the motion occurred.
acceleration
speed
motion
velocity
KEY TERM: An object's change in position relative to a reference point.
acceleration
speed
motion
velocity
KEY TERM: The speed of an object in a particular direction.
acceleration
speed
motion
velocity
KEY TERM: A push or a pull exerted on an object in order to change the motion of the object; has size and direction.
force
net force
newton
friction
KEY TERM: The combination of all the forces acting on an object.
force
net force
newton
friction
KEY TERM: The SI unit for force (symbol, N)
force
net force
newton
friction
KEY TERM: A force that opposes motion between two surfaces that are in contact.
force
net force
newton
friction
KEY TERM: A force of attraction between objects that is due to their masses and distances between them.
gravity
mass
weight
momentum
KEY TERM: A measure of the amount of matter in an object.
gravity
mass
weight
momentum
KEY TERM: A measure of the gravitational force exerted on an object; its value can change depending on the object's location in the universe.
gravity
mass
weight
momentum
KEY TERM: The motion of an object when only the force of gravity is acting on it.
free fall
projectile motion
terminal velocity
inertia
KEY TERM: The curved path that an object follows when thrown, launched, or otherwise projected near the surface of Earth.
free fall
projectile motion
terminal velocity
inertia
KEY TERM: The constant velocity of a falling object when the force of air resistance is equal in strength and opposite in direction to the force of gravity.
free fall
projectile motion
terminal velocity
inertia
KEY TERM: The tendency of an object to resist a change in motion. If it's moving, it doesn't want to stop moving. If it's at rest, it wants to stay at rest.
free fall
projectile motion
terminal velocity
inertia
KEY TERM: A quantity defined as the product of the mass and velocity of an object.
gravity
mass
weight
momentum
KEY TERM: The pressure caused by the weight of the atmosphere.
atmospheric pressure
fluid
pascal
pressure
KEY TERM: a nonsolid state of matter in which the atoms or molecules are free to move past each other; a gas or liquid
atmospheric pressure
fluid
pascal
pressure
KEY TERM: The SI unit of pressure (symbol, Pa)
atmospheric pressure
fluid
pascal
pressure
KEY TERM: The amount of force exerted per unit of area on a surface.
atmospheric pressure
fluid
pascal
pressure
KEY TERM: The principle that states that the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of fluid that the object displaces.
Archimedes' principle
Bernoulli's principle
Pascal's principle
KEY TERM: The principle that states that the pressure in a fluid decreases as the fluid's velocity increases.
Archimedes' principle
Bernoulli's principle
Pascal's principle
KEY TERM: The principle that states that a confined fluid exerts a pressure equal in intensity in all directions.
Archimedes' principle
Bernoulli's principle
Pascal's principle
KEY TERM: The upward force that keeps an object immersed in or floating on a fluid.
buoyant force
drag
lift
thrust
KEY TERM: A force in a fluid that opposes or restricts motion
buoyant force
drag
lift
thrust
KEY TERM: an upward force on an object that moves in a fluid.
buoyant force
drag
lift
thrust
KEY TERM: The forward pushing or pulling force exerted by the engine of an aircraft or rocket.
buoyant force
drag
lift
thrust
